采用java编写的处理PDF文档的程序，可从PDF文档中抽取txt文本，可与lucene搜索引擎相结合。-adopting the java programs compiled to dispose the PDF document, taking out the txt text from the PDF document, and combining with the lucene searcher.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002039s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.094375s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002375s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001981s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002349s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003730s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002123s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003307s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.018091s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002875s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 51967 [ RunTime:0.001374s ]
